The latest from the National desk

What happened to Baby Lisa?

The baby's mother said she put the infant to sleep in her crib on the evening of Oct. 3 and then retreated to her own bedroom and fell asleep. When her husband returned home about 3:30 a.m. Tuesday after his evening shift, the electrician said he found the front door wide open, the lights on -- and an empty crib.

The parents began frantically searching the house and shouting at each other to call 911. It was then that they discovered that their three cellphones, which were lined up on the counter for charging and reprogramming of phone numbers, were also missing.

Law enforcement officers have been working around the clock combing the area for clues, including searching an area landfill. Over the weekend, they re-created one possible scenario -- an intruder crawling in through the bedroom window -- as part of their investigation. The FBI has joined the search, and other local law enforcement agencies are loaning out their own lawmen to help in any way they can, Young said.

At one point last week, the baby's parents, Jeremy Irwin and Deborah Bradley, appeared to be embroiled in a dispute with the police. There were media reports that they were no longer cooperating with law enforcement. That's not true, the parents said, and insisted that they were doing everything asked of them.

Moreover, Deborah Bradley told the Associated Press that officials told her she had failed a lie detector test. She says she believes it was a ploy, and that she has told law enforcement everything she knows.

On Monday, Young said he would not comment on that wrinkle in the case other than to say that "Everybody is back talking again and we're very happy with that."

Friends and relatives are also pitching in to find the little girl. The baby's aunt handed out thousands of fliers to NASCAR fans attending the Kansas Speedway's Sprint Cup race over the weekend, and a Help Find Lisa Irwin page has been set up on Facebook.